(_IO_old_fclose): Detect new streams and handle them appropriately.

1 files changed, 6 insertions, 0 deletions

diff --git a/libio/oldiofclose.c b/libio/oldiofclose.c
index 51781366d6..8ddad32b04 100644
--- a/libio/oldiofclose.c
+++ b/libio/oldiofclose.c
@@ -37,6 +37,12 @@ _IO_old_fclose (fp)
 
   CHECK_FILE(fp, EOF);
 
+  /* We desperately try to help programs which are using streams in a
+     strange way and mix old and new functions.  Detect new streams
+     here.  */
+  if (fp->_vtable_offset == 0)
+    return _IO_new_fclose (fp);
+
   _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   if (fp->_IO_file_flags & _IO_IS_FILEBUF)